Instrumentation_X-ray Tube II

The main material used for the filament is:

• Copper

• Tungsten

• Aluminum

• Lead

The focusing cup is made of:

• Tungsten

• Copper

• Nickel

• Molybdenum

The filament in an X-ray tube produces electrons by:

• Photoelectric effect

• Thermionic emission

• Compton scattering

• Saturation current

The vacuum inside the X-ray tube is maintained by the:

• Protective housing

• Envelope

• Stator

• Rotor

The unit of tube current is:

• kVp

• mAs

• mA

• J

The function of the stator is to:

• Produce electrons

• Rotate the anode

• Focus the electron beam

• Cool the tube

The portion of the anode struck by electrons is called the:

• Target

• Rotor

• Focusing cup

• Anode stem

The protective housing is primarily lined with:

• Copper

• Lead

• Aluminum

• Iron

Dielectric oil in the tube housing is used for:

• Insulation and cooling

• Electron emission

• Image enhancement

• Beam filtration

The most common target angle in diagnostic X-ray tubes is:

• 6°

• 12°

• 22°

• 45°